[caldrail]

I'm marveling at the grass underneath the snow. How was that done?

Well... It all sort of came naturally. The two aircraft are superimposed on a photograph of a field last winter. It's north Wiltshire, just south of Chiseldon, the A346 on the left of the picture beyond the hedge, and just off to the right the old course of the Midland & South West Junction Railway (now a cycletrack).